Omega HHM14, Руководство пользователя

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6
OPERATION
Before taking any measurements, read the Safety Information Section.
Always examine the instrument for damage, contamination (excessive dirt,
grease, etc.) and defects. Examine the test leads for cracked or frayed
insulation. If any abnormal conditions exist do not attempt to make any
measurements.
Voltage Measurements
1. Connect the red test lead to the "V
W
" jack and the black test lead to the
"COM" jack.
2. Set the Function/Range switch to the desired voltage type (AC or DC) and
range. If magnitude of voltage is not known, set switch to the highest range
and reduce until a satisfactory reading is obtained.
3. Connect the test leads to the device or circuit being measured.
4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied.
Current Measurements
1. Set the Function/Range switch to the desired current type (AC or DC) and
range.
2. For current measurements less than 200mA, connect the red test lead to the
"mA" jack and the black test lead to the "COM" jack.
3. For current measurements over 200mA or greater, connect the red test lead
to the "10A" jack and the black test lead to the "COM" jack.
4. Remove power from the circuit under test and open the normal circuit path
where the measurement is to be taken. Connect the meter in series with the
circuit.